Steam-generator



(ModeL) -T. O. JOY.

Steam Generator.

No. 233,624. Patented Oct. 26,1880

Fig l. F492.

n. PETERS, PHOTO LITHOGRAPHEIL WASHINGTON. D c

THADDEUS C. JOY, OF TITUSVILLE, PENNSYLVANIA.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 233,624, dated October 26, 1880.

Application filed May 13, 1880. (Model) To all whom it may concern Be it known that 1, THADDEUS (J. Just, a citizen of the United States, residing at Titusville, in the county of Crawford and State of Pennsylvania, have invented a new and usefnl Improvement in Steam Generators, of which the following is a specification.

My invention relates to an improvement in that class of steam-boilers which have a magazine coal-reservoir surrounded by fire-fines and steam-tubes surmounted bya steam-dome, and also specially to the boiler made of segcost of manufacture as compared with the.

mental sections patented to me November 12, 1878; and the objects of my improvements are, first, to provide segmental sections which will present broad fire-surfaces and a large steam-space, and at the same time lessen the plan of construction shown in my aforesaid patent, wherein independent fire-tubes are employed in connection with the segmental sections forming the steam-spaces; second to provide an annular steam-dome stayed by vertical tubes between its top and bottom plates, the stay-tubes being provided with caps and their lower open ends standing over the flamepassages formed by the segmental sections;

thus, while a dome of great strength and increased heating-surface is secured, said dome affords facilities for introducing pokers and tools for cleaning out the said flame-passages without its removal from the generator; and, third, to provide an annular steam-dome which is made air-tight bya ground joint or otherwise where fitted to the generator, in combination 7 faces are separated vertically from one another and from the coal-reservoir, except at the radial centers of the segmental sections, and are connected with each other by elbow-tubes at top and bottom, and with the steam-dome and water-leg by short hollow collars; sixth, to provide horizontal fines or passages below the steam-dome and between the inner and outer series of pieces forming the steam-generating surfaces, whereby the most perfect circulation of the flame after it has ascended is permitted from the top to the bottom of the generating-surfaces, and then around the outside of said surfaces to the draft-fine or to a smoke-box, accordingly as the case may be; and, seventh, to provide V-shaped chambers or fines, as hereinafter specified. these objects by the means illustrated in the accompanying drawings, in which- Figure 1 is a vertical section of the generator detached from the outer jacket orcasing, the section being taken in the line 00 w of Fig. 3. Fig. 2 is a similar section in the line y y of Fig. 3, and Fig. 3 is a horizontal section of the same. Fig. 4 is a vertical section of the generator and its outer jacket or casing in the line 2 z of Fig. 3. Fig. 5 is a broken vertical section of the steam-dome, showing the stay-tubes made with a downward flare.

Similar letters refer to correspondingparts in all the views.

The generator is shown'as composed of eight segmental sections, A; but the number may be increased or decreased, as deemed best. The sections adjoin one another radially at a, and on the radii of the sections depressions b are formed on each of the sections, and these depressions extend from top to bottom of the sections, and every pair of the depressions forms a vertical flame-tube, b, of a form correspondin g very closely to a double-convex lens. The sections A are hollow from top to bottom, and are closed at all points except through the small tubular collar-openings c c and the elbow-pipe openings (1 d. On the inner wall of the sections A vertical hollow chambers 13 are applied by means of narrow isolating-lugs e, as shown. These chambers are of nearly a V form, and on their outer side are depressed, as indicated byf, from top to bottom, so as to form a vertical and nearly V-shaped flamepassage, f, from top to bot-tom of the section, as shown. The chambers B are closed at top and bottom, except the openings g g, which receive elbow-pipes h h, forming communications between the chambers of the parts A I attain and B, as shown. Between every pair of the chambers B another flame passage, f, is formed.

At the point where the door of the fire-chamber O is located some of the chambers B are made shorter than the others, as indicated at z', in order to afford access to the fire-grate D, and all of the chambers B are made to terminate upwardly some distance below the top of the sections A, in order to form horizontal flame passages j between their upper ends and the dome D. At the points where these passages are formed the sections A are decreased in width on each side of their center, and thus passagesj, forming continuations of the passages j, are formed. At the bottom of the sections A an annular water-leg, E, is applied, and fastened in position by lugs 7c and screws 7c. Thisleg forms the fire-chamber U, and its water-space communicates with the steam or water spaces of the parts A and B by the collars at 0. At the top of the said parts A and B the steam-dome D, of annular form, is applied being fastened in position by lugs land screws Z. This dome makes a tight fit by means of a ground joint or otherwise at m, andit communicates with thesteam or water spaces of the sections A and chambers B by the collars at 0. Between the top and bottom plates of the dome a number oftubes, D, are applied, they being flared downwardly and open at both ends, as shown in Figs. 1. and 5. These tubes stand over the flamespaces 1) and fj, as indicated by the dotted circles D in Fig. 3, and thus they are exposed to the flames as they rise and descend. Each tube is provided with a removable reverberating cover, D which, when removed, allows of access with pokers and other tools to the flame spaces 1) f f. Thus the flame-spaces can be cleaned without removing the dome. The tubes D serve for staying the dome against the very intense heat to which it is subjected, and preventit from warping and cracking, and they also form a large increase of heating-surface, with which and that of the dome the steam is superheated or raised to a very high pressure. In the center of the cylindrical boiler, formed by the series of segmental sections A and attached chambers B, a large coal-reservoir, F, is applied, so that the inner corners, n, of the chambers B just touch its periphery, as shown. Thus the flame is compelled to rise in the separated Vertical spaces f f? between the chambers B, sections A, and coal-reservoir F.

The narrow lugs e e do not interfere ma terially with the circulation of the flame (as it rises) against the entire inner surface of the sections A and outer surface of the chambers B.

The operation is as follows The flame, rising from the fire on the grate D, passes up through the broad passages f f, horizontally along the passages jj, up into the tubes D, then down the broad spaces b into the space inclosed by the outer jacket, and thence into the smoke-pipe, as indicated by the arrows. Thus the water heated in the water-leg E by the full fire of the grate is further subjected to the direct action of the rising flame and converted into steam within the steam-spaces of the sections A and chambers B, and this steam is superheated in the dome D by the accumulated heat and flame, which are concentratedin the dome by means of the tubes D.

WVhat I claim as my invention, and desire to secure by Letters Patent, is

1. In a boiler or steam-generator, the independent vertical water and steam chambers B, formed with depressions or hollow spaces f upon their outer surfaces and next the segments A, forming direct flues and connecting with segments A at top and bottom, substantially in the manner described.

2. The annular steam dome D, provided with large vertical tubes or openings D, havin g reverberatory covers, and connected to the segmental boiler by lugs and clamp-bolts, whereby access to the tubes of the boiler and flues is afforded and the heat accumulated is reverberated downward, substantially as and for the purpose set forth.

3. In a magazine-boiler having segmental sections around its magazine, the annular steam-dome D, provided with vertical heating and staying tubes D, having reverberatory covers, substantially as and for the purpose described.

4.. The combination of the sections A, chambers B, water-leg E, and connecting collars, pipes, lugs, and bolts, substantially in the manner and for the purpose described.

5. The tapering chambers B, having depressions f in their outer side, connected to the sections A by lugs c, and abutting against the coal-reservoir F, and connected with the steam-space of sections A by elbow-pipes h h, and with the steam-dome D and water-leg E by collars c 0, substantially as described.

6. The sections A, formed with depressions b, and the chambers B, of V form in horizontal section, made separate from each other, and constructed and united to form flame-passages jj and f f in the manner substantially as described.

7. The chambers B, of V form in horizontal section, and having depressions f on their surface, said chambers being made separate from the sections A and adapted for use therewith, substantially as and for the purpose herein described.

THADDEUS O. JOY.

Witnesses:

J osnrn SMITH, S. G. WILLIAMS. 

